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3 years ago

Look at the model below. Which formula is best represented by this model?

Chemistry

1 answer:

Olenka [21]3 years ago

6 0

The third answer because there are two of each atom

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A scientist studies the DNA of three different species. The DNA from species A is more similar to DNA from species B than DNA fr

rewona [7]

DNA A and B are probably the most closely related because cells get DNA from the parent cells therefor similar DNA comes from relatives.

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3 years ago

A chunk of tin weighing 18.5 grams and originally at 97.38 °C is dropped into an insulated cup containing 75.7 grams of water at

weqwewe [10]

Answer:

22.44°C will be the final temperature of the water.

Explanation:

Heat lost by tin will be equal to heat gained by the water

$-Q_1=Q_2$

Mass of tin = $m_1=18.5 g$

Specific heat capacity of tin = $c_1=0.21 J/g^oC$

Initial temperature of the tin = $T_1=97.38^oC$

Final temperature = $T_2$ =T

$Q_1=m_1c_1\times (T-T_1)$

Mass of water= $m_2=75.7 g$

Specific heat capacity of water= $c_2=4.184 J/g^oC$

Initial temperature of the water = $T_3=21.52^oC$

Final temperature of water = $T_2$ =T

$Q_2=m_2c_2\times (T-T_3)$

$-Q_1=Q_2$

$-(m_1c_1\times (T-T_1))=m_2c_2\times (T-T_3)$

On substituting all values:

$-(18.5 g\times 0.21 J/g^oC\times (T-97.38^oC))=75.7 g\times 4.184 J/g^oC\times (T-21.52 ^oC)$

we get, T = 22.44°C

22.44°C will be the final temperature of the water.

5 0

3 years ago

What mass of glucose can be produced from photosynthesis reaction using 10.0 mols co2

AnnZ [28]

Answer:

300.06 grams of glucose can be produced from a photosynthesis reaction that occurs using 10 moles of carbon dioxide.

Explanation:

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2 years ago

What text features were used? font color, shadow, and bold font color, italics, and outline font color, italics, and bold font c

AlladinOne [14]

Answer:

Explanation:

question isnt clear

4 0

3 years ago

How many grams are in 2 moles of Iodine?

Nady [450]

Answer: 253.8

Explanation:

The molar mass of iodine is 126.904. Multiply that by two and you get approximately 253.8 grams in two moles.

6 0

2 years ago

Read 2 more answers

Look at the model below. Which formula is best represented by this model?​

Look at the model below. Which formula is best represented by this model?